[jira] [Created] (FLINK-31871) Interpret Flink MemoryUnits according to the actual user input

["Alexander Fedulov (Jira)" <ji...@apache.org>]

Alexander Fedulov created FLINK-31871:
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             Summary: Interpret Flink MemoryUnits according to the actual user input
                 Key: FLINK-31871
                 URL: https://issues.apache.org/jira/browse/FLINK-31871
             Project: Flink
          Issue Type: Improvement
          Components: API / Core, Kubernetes Operator
            Reporter: Alexander Fedulov


Currently all MemorySize.MemoryUnits are interpreted in "bibyte" notation, regardless of the units that users specify: [https://github.com/apache/flink/blob/release-1.17/flink-core/src/main/java/org/apache/flink/configuration/MemorySize.java#L352-L356]
(i.e. G = Gi)

Flink Kubernetes Operator utilizes these units for specifying resources in user-facing CR API (taskManager.resource.memory, jobManager.resource.memory). In other places this CR requires native K8S units specification (i.e. spec.containers[*].ephemeral-storage). 

There are two issues with this:
 * users cannot rely on the same units notation (taskManager.resource.memory = 16Gi fails)
 * taskManager.resource.memory = 16G is not interpreted as other units in the spec (16G is implicitly converted into 16Gi)



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